<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
<!--    <link rel="stylesheet" href="./01.css" type="text/html">-->
    <link rel="stylesheet" href="01.css">
</head>
<body>
<h1>01.html</h1>

<img src="http://img.itboyhub.com/123.jpg"/>

</body>
</html>